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ChainVerdict IBAN Validator
x402
ChainVerdict IBAN Validator is a paid API for AI agents from chainverdict.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Validates an IBAN string structurally using country-specific length rules, character set checks, and the ISO 7064 mod-97 checksum algorithm.
Price / call$0.001
Success—
StatusUnknown
How this service works
Validate an IBAN structurally: country length rules, character set and the ISO 7064 mod-97 check. Deterministic. A structurally valid IBAN is not proof the account exists, is open, or belongs to the party you are paying.
Output
Returns a structured validation result indicating whether the IBAN passes all structural checks: country-specific length rules, allowed character set, and the ISO 7064 mod-97 check digit calculation. Does not confirm whether the account exists or is active.
Example use cases
Pre-payment IBAN sanity check
“Before I send this wire transfer, can you validate that the IBAN DE89370400440532013000 is correctly formatted and passes the checksum — I want to catch any typos before it goes out.”
User-submitted form data validation
“A customer just entered the IBAN FR7630006000011234567890189 in our checkout form — can you verify it's structurally valid so we don't reject their payment unnecessarily?”
Bulk invoice IBAN audit
“I have an IBAN from a vendor invoice: NL91ABNA0417164300 — can you check if it's a valid IBAN with the correct Dutch format and mod-97 checksum before I approve the payment run?”
Technical details
Endpoint
GEThttps://chainverdict.xyz/v1/validate/iban/%3Aiban?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, deterministic, zero-dependency structural IBAN check before initiating a payment or onboarding a bank account. It is ideal for pre-validation in payment flows, form validation, and compliance pipelines where you want to catch formatting errors early. It does not perform live bank account lookups, so pair it with a live account verification service if account existence must be confirmed.
Side effects
- Malformed or missing IBAN path parameter returns an error
- IBAN with invalid country prefix fails country-length lookup
- IBANs that are structurally valid but belong to non-existent accounts are still reported as valid
- Network or payment failure returns HTTP 402 if x402 payment is not completed
- Very long or unexpected input strings may return a parse error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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